Grizzell, E. D. (1937). American secondary education. T. Nelson and sons.
芝加哥风格引文Grizzell, Emit Duncan. American Secondary Education. New York: T. Nelson and sons, 1937.
MLA引文Grizzell, Emit Duncan. American Secondary Education. T. Nelson and sons, 1937.
警告：这些引文格式不一定是100％准确.